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Mario Alejandro Pérez Casallas

As400 Senior Software Developer
Skills
(Self-evaluation)
Rpg 90%
Iseries 90%
As400 87%
Languages
English:
  • Speaking
    50%
  • Reading
    55%
  • Writing
    50%
Spanish:
  • Writing
    100%
  • Reading
    100%
  • Speaking
    100%
Professional profile

Work experience

As400 Senior Software Developer
tata consultancy services | May 2015 - December 2024 (9 years 7 months)
Used skills
As400 Software Developer
heinsohn business technology | June 2010 - January 2015 (4 years 7 months)
Used skills
Education experience
Google Data Analytics Professional Certificate
Coursera google | Bootcamp
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